Home / 30,213.86-45,305.22-13,559.61

Finding the Fourth Proportional to 30,213.86, 45,305.22 and 13,559.61

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Solution

The fourth proportional to 30,213.86, 45,305.22 and 13,559.61 is: 20,332.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,213.86 : 45,305.22 = 13,559.61 : x
  2. Step 2: Convert to fraction form
    30,213.86/45,305.22 = 13,559.61/x
  3. Step 3: Cross multiply
    30,213.86x = 45,305.22 × 13,559.61
  4. Step 4: Simplify right side
    30,213.86x = 614,321,114.16
  5. Step 5: Solve for x
    x = 614,321,114.16/30,213.86
  6. Step 6: Final answer
    x = 20,332.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.